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*Flespi.io account to act as an MQTT Broker/Publisher/Subscriber (for first configuration example);
 
*Flespi.io account to act as an MQTT Broker/Publisher/Subscriber (for first configuration example);
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==Configuration using flespi.io as MQTT Broker==
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[[File:MQTT Serial gateway topology v2.png|border|center|class=tlt-border|847x279px]]
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[[File:MQTT Serial gateway topology.png|border|center|class=tlt-border|847x279px]]
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===Configuring RUT955 MQTT Gateway===
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RUT2 will act as a Modbus RTU slave and RUT1 as a Modbus RTU Master. On RUT1, MQTT Serial Gateway will be configured to transfer Modbus data over MQTT. Flespi.io platform will serve as an MQTT Broker
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==RUT2 configuration==
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===Configuring Modbus RTU Slave===
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----
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Go to Services → Modbus → Modbus RTU Slave and create a new instance.
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# Enter the '''desired instance name''';
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# Select the '''desired serial interface'''.
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[[File:Modbus RTU Slave.png|border|center|class=tlt-border|855 × 308px]]
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==RUT1 configuration==
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===Configuring MQTT Gateway===
 
----
 
----
 
Go to '''Services → Modbus → MQTT Gateway''' and there:
 
Go to '''Services → Modbus → MQTT Gateway''' and there:
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'''Note''': ''Everything else can be left as default or changed according to your needs.''
 
'''Note''': ''Everything else can be left as default or changed according to your needs.''
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===Configuring RUT955 Serial Gateway===
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===Configuring Serial Gateway===
 
----
 
----
 
Under the MQTT Gateway configuration, create the Serial Gateway:
 
Under the MQTT Gateway configuration, create the Serial Gateway:
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====Examples====
 
====Examples====
 
----
 
----
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Modbus parameters are held within registers. Each register contains 2 bytes of information. For simplification, the number of registers for storing numbers is 2 (4 bytes), while the number of registers for storing text information is 16 (32 bytes).
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The register numbers and corresponding system values can be found [[RUT955_Monitoring_via_Modbus#Get_Parameters|in this article]].
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{| class="wikitable"
 
{| class="wikitable"
 
|Setting relay (on) (Relay address is 202, which means 'Number of first register will be 203)
 
|Setting relay (on) (Relay address is 202, which means 'Number of first register will be 203)
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|'''1 1 1 1 1 3 6 2'''
 
|'''1 1 1 1 1 3 6 2'''
 
|}
 
|}
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===Testing MQTT Publisher and Subscriber on flespi.io===
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Modbus parameters are held within registers. The register numbers and corresponding system values can be found [[RUT955_Monitoring_via_Modbus#Get_Parameters|'''in this article''']].
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----
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==Testing MQTT Publisher and Subscriber on flespi.io==
 
====Adding Flespi Subscriber====
 
====Adding Flespi Subscriber====
 
----
 
----
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==See Also==
 
==See Also==
 
*[[RUT955 Monitoring via Modbus#Get Parameters]]
 
*[[RUT955 Monitoring via Modbus#Get Parameters]]
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*[[RUT955_Modbus#MQTT_Gateway|MQTT Gateway]]
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*[[RUT955_Modbus#MQTT_Gateway|MQTT Gateway and Modbus]]
 
==External links==
 
==External links==
 
[https://flespi.io/#/ Flespi.io]
 
[https://flespi.io/#/ Flespi.io]
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